Ahsan Mumtaz

Experience

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  Upwork

  Jan 2020 - now

  Freelance Software Engineer

  * Architected and implemented a fault-tolerant microservices system using RabbitMQ for message queuing, resulting in 99.99% service availability, 70% improved system scalability, and enabling asynchronous processing that reduced end-user response times by 40%.* Implemented Kubernetes for orchestrating containerized applications, resulting in 99.9% uptime and 40% reduction in infrastructure costs.* Containerized multiple applications using Docker, improving deployment consistency and reducing environment-related issues by 80%.* Optimized SQL queries, resulting in a 40% reduction in average query execution time and improved application responsiveness.* Refactored codebase using dependency injection and SOLID principles, increasing code maintainability score by 25% and reducing bugs in new features by 15%.* Implemented a comprehensive CI/CD pipeline using Jenkins, Docker, and Ansible, reducing deployment time from hours to minutes, increasing release frequency by 60%, and cutting production issues by 75% through automated testing and staged rollouts.* Implemented React Query for efficient data fetching and caching in a large-scale React application, reducing API calls by 70%, improving app performance by 40%, and enhancing user experience with instant data updates. Show less

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  RepairDesk

  Oct 2022 - Jul 2024

  Software Engineer

  * Developed Appointments Pro, a versatile website widget that increased appointment scheduling efficiency by 50%, allowing customers to obtain accurate quotes and schedule appointments with ease.* Developed OrderSync app, an automated system for creating purchaseorders and managing inventory, resulting in significant time and cost savings whilemaintaining accurate financial records.* Developed the Rewards app as a comprehensive ecosystem for repair businessgrowth, providing exclusive offers, content, and rewards, along with the vendordiscounts, to increase revenue.* Spearheaded the development of a successful Marketplace app by seamlessly integrating Magento 2 vendor APIs. This transformative solution empowers customers to effortlessly create orders on our platform, leveraging the seamless integration with popular sites like MobileSentrix, Parts4Cells, Rounded, One Source Suppliers, Repair Outlet, WholeSale Gadgets Parts, and Injured Gadgets. Optimizing the purchase order process significantly enhanced operational efficiency while delivering heightened customer satisfaction Show less